Finding the Fourth Proportional to 172,760.18, 259,172.94 and 67,572.50

Step by Step Solution

1. Step 1: Write the proportion equation
   172,760.18 : 259,172.94 = 67,572.50 : x
2. Step 2: Convert to fraction form
   172,760.18/259,172.94 = 67,572.50/x
3. Step 3: Cross multiply
   172,760.18x = 259,172.94 × 67,572.50
4. Step 4: Simplify right side
   172,760.18x = 17,512,963,488.15
5. Step 5: Solve for x
   x = 17,512,963,488.15/172,760.18
6. Step 6: Final answer
   x = 101,371.53